sherwood



UNiTEn sTAris PATENT onrica lTOHN SPERRY AND C. W. SHER\VOOD, OF NEU' YORK, N. Y.

MACHINE FOR ENAMELING PICTURE-FRAMES.

Specification forming part of Letters Patent No. 31,913, dated April 2, 1861; Reissued January 26,

To all whom it may concern:

Be it known that we, JOHN SPERRY and C. lV. SHERwooD, both of the city, county, and State ofwNew York, have invented a new and Improved Machine for Enameling Oval and other Shaped Frames Preparatory to Gilding the Same; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had tothe annexed drawings, making a part of this specification, in which- Figure l, is a sectional elevation of our invention, taken in the line ce, m, Fig. 2; Fig. 2, an elevation of the same; Fig. 3, a top lview of t-he scraper applied to an oval frame; Fig. 4, a view of a diamond shaped frame with curved corners.

Similar letters of reference indicate corresponding parts in the several figures.

The object of this invention is to obtain a machine which will greatly aid and eX- pedite the manual process of enameling frames, such as picture and minor frames, preparatory'to gilding them; and one which may be used for enameling circular, oval and all other shaped frames, excepting those containing angles.

The invention consists in the employment or use of a.. vertical rotating arbor with a frame to be operated upon and also a basin or receiver attached and arranged in a novel way; and also in the employment or use of a scraper constructed in a peculiar manner, whereby the desired result is obtained.

To enable those skilled in the art to fully understand and construct our invention we will proceed to describe it.

A, represents a base or platform on which an upright frame B, is placed, and C, is a vertical shaft which has its bearing in the frame B, and is stepped at a, as shown in Fig. 2. The shaft C, is rotated by gearing b, c, from a driving shaft D, and on the upper part of the shaft C, there is placed a basin or receiver D. The basin or receiver D, is fitted loosely on its shaft C, the basin having a hub cl, secured within it centrally and into which the upper part of shaft C, passes, the basin or receiver resting on a pin c, which passes through the shaft C. To the under side of the basin or receiver D', there is attached a vertical pin f, against which the pin e, of shaft C, bears and causes the basin or receiver D, to rotate with the shaft.

E, is a lamp which is placed on a stand convenient power.

attached to frame B, at a suitable distance below the basin or receiver D; and F, is a treadle which is-attached to the base or platform A, and is connected by a rod G, with a lever H, attached to the frame B. This lever is forked at its inner end and extends underneath the basin or receiver to about its center', as shown in Fig. 2.

I, represents a. frame to `be enameled.

This frame is secured horizontally on the top of the hub (l, and within the basin or re ceiver the substance is placed with which the frame is enameled; to wit, whiting and size. J, represents a scraper which is formed of two vertical metal plates g, 7i, having each a horizontal flanch t', at their upper ends. These flanches overlap each other and are connected together by a bolt' j, on which they are allowed to work freely. The plate f, has its lower edge cut or formed so as to correspond with a profile of a transverse `section of the face of the frame as shown clearly in Fig. l. The other plate, z., may be constructed in the same way if desired, but it is not essential as the latter plate merely serves as a guide and it may have the ends lc, lc, only to serve as bearings, see Fig. l.

The operation is as follows: The basin or receiver D is supplied with a requisite quantity of Whiting and size, and the lamp E, is lighted and placed in proper place on its stand; the frame I, is secured on the hub d, and the shaft D, rotated by any The operator by means of a suitable brush applies the Whiting to the frame I, which issoon evenly covered on account of its rotation, and the rotation of the basin or receiver D', prevents the whiting, directly over the lamp, becoming stiff or hard as would be the case were it kept stationary over the lamp. This arrangement admits of the water receptacle being dispensed with, a device hitherto necessary in order to insure the even or uniform heating of the Whiting, the basin or receptacle of the latter being fitted in a water receptacle similar to an ordinary glue pot. lVhen the Whiting is applied to the frame I, the operator or attendant applies the scraper J, to the face of the frame and holds the same thereto by hand while the frame rotates. The plate h, of the scra er, which is the foremost one, serves, as be ore stated, as a guide and prevents the plate g,

from being thrown out of a proper position with the frame; so that said plate g, cannot bind on the frame, a contingency which would occur if the plate g, were thrown out materially from a position atright angles with the face of the frame, or, in other words, out from a line radial with shaft C. By having the two plates g, it, connected by the bolt z', they are allowed to move or adjust themselves more or less angularly or obliquely with each other to correspond to the form of the frame. The operator holds the scraper J, so as to allow it to move freely under the rotation of the frame, and it will therefore be seen that any frame of a curved form, see Fig. l for instance, or a curved and straight form combined and having no angles, may be enameled by our machine. The scraper J, performs, of course, the same function as those of other machines, taking off the superfluous whiting and smoothing that left on the frame.

The basin or receiver by being placed on the shaft C, and in the relation with frame I, as shown and described admits of the Whiting being readily applied to the frame and without any spilling and waste of the samerand at any time when it is desired to stop the rotation of the basin and frame without stopping the shaft C, which is done in putting on and taking off the frames from the hub (l, the operator raises the basin D', so that its pin f, will be above the pin e, of shaft C, by depressing lever F with his foot.

The machine, it will be seen, is extremely simple and elicient and itis believed admits of a more general adaptation to different lrinds of work than any hitherto devised for the purpose.

Having thus described our invention what we claim as new and desire to secure by Letters Patent; is,

l. The employment or use on a vertical rotating shaft C, of a basin or enamel receiver D, (with or without lamp E,) and the frame I, to be enameled arranged substantially as and for the purpose specified.

2. The sc raper J, formed of two plates g, hi, connected together by a bolt y', and arranged to operate as and for the purpose herein set forth.

3. The lever H, in combination with the pin e, of shaft C, and the pin f, of the sliding or adjustable basin or receiver D', or other suitable clutch, arranged to operate ubstantially as and for the purpose speci- JOHN SPERRY. C. lV. SHERVOOD.

lfl/Yitnesses M. M. LIVINGSTON, C. 7. Cow'rAN. 

